to migrate by following older cranes in the flock
2 chicks are also captive-born. In fall the chicks are released
in the company of older cranes from whom the young birds learn the
migration route in a program called
Direct Autumn Release (DAR).
International Crane Foundation
(ICF) raised 8 young
cranes for the 2011 Direct Autumn Release (DAR) program. The young
chicks spent six weeks at the Necedah NWR in Juneau County, Wis.,
where they got used to wetland habitat and wild cranes near by. They were transported to Horicon National Wildlife Refuge on September 20. Costumed biologists
from ICF will watch over them. On October 14 these
cranes were banded. On October 21 they were set free in the company of older
cranes on Horicon NWR. They willl
learn the migration route south by following these older cranes.
to migrate by following their parents
3 chicks are wild-born. Their parents raise them and teach them
to migrate. This is the natural way cranes learn to migrate.
day, this flock will be large enough for wild-born parents to take
over. Then human-assisted migration will no longer be needed.
Image: Eva Szyszkoski, ICF
chicks hatched in the new Eastern flock in spring 2011. None
survived past July 1.